6-Speed Automatic (DISC) No longer available as standard equipment as of January 16, 2019.
8-Speed TorqueFlite Automatic (DFD)
8-Speed TorqueFlite Automatic (DFL)
8-Speed TorqueFlite Auto
6-Speed Automatic
Transmission, 6-speed automatic, electronically controlled with overdrive and tow/haul mode. Includes Cruise Grade Braking and Powertrain Grade Braking
Cooling, auxiliary external transmission oil cooler